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E08.9

✓ Billable

Diabetes mellitus due to underlying condition without complications

Endocrine, nutritional and metabolic diseases (E00-E89)

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

E08
  • • drug or chemical induced diabetes mellitus (E09.-)
  • • gestational diabetes (O24.4-)
  • • neonatal diabetes mellitus (P70.2)
  • • postpancreatectomy diabetes mellitus (E13.-)
  • • postprocedural diabetes mellitus (E13.-)
  • • secondary diabetes mellitus NEC (E13.-)
  • • type 1 diabetes mellitus (E10.-)
  • • type 2 diabetes mellitus (E11.-)

📋 Code Instructions

inherited
E08
  • • code to identify control using:
  • • injectable non-insulin antidiabetic drugs (Z79.85)
  • • insulin (Z79.4)
  • • oral antidiabetic drugs (Z79.84)
  • • oral hypoglycemic drugs (Z79.84)
  • • Code first: the underlying condition, such as:
  • • Code first: congenital rubella (P35.0)
  • • Code first: Cushing's syndrome (E24.-)
  • • Code first: cystic fibrosis (E84.-)
  • • Code first: malignant neoplasm (C00-C96)
  • • Code first: malnutrition (E40-E46)
  • • Code first: pancreatitis and other diseases of the pancreas (K85-K86.-)

Clinical Description

ICD-10-CM code E08.9 represents diabetes mellitus due to underlying condition without complications. This code falls under the Endocrine, nutritional and metabolic diseases (E00-E89) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory. Coders should note that E08.9 has 8 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code E08.9?

ICD-10-CM code E08.9 is "Diabetes mellitus due to underlying condition without complications". It belongs to the category: Endocrine, nutritional and metabolic diseases (E00-E89).

Is E08.9 a billable ICD-10 code?

Yes, E08.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with E08.9?

E08.9 has 8 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in E08

Other codes in the same category that may be relevant for differential coding:

E08.0Diabetes mellitus due to underlying condition with hyperosmolarityE08.1Diabetes mellitus due to underlying condition with ketoacidosisE08.2Diabetes mellitus due to underlying condition with kidney complicationsE08.3Diabetes mellitus due to underlying condition with ophthalmic complicationsE08.4Diabetes mellitus due to underlying condition with neurological complicationsE08.5Diabetes mellitus due to underlying condition with circulatory complicationsE08.6Diabetes mellitus due to underlying condition with other specified complicationsE08.8Diabetes mellitus due to underlying condition with unspecified complications

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Code Information

CodeE08.9
BillableYes
ParentE08
CategoryEndocrine, nutritional and metabolic diseases (E00-E89)
Excludes18 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)